Noise Protocol Framework

The Noise Protocol Framework, sometimes referred to as "Noise" or "Noise Framework", is a public domain cryptographic framework for creating secure communication protocols based on Diffie–Hellman key exchange. Developed by Trevor Perrin, the framework defines a series of handshake patterns—predefined sequences of message exchanges—that outline how parties initiate communication, exchange keys, and establish shared secrets. These patterns can be combined and customized to meet specific security requirements such as mutual authentication, forward secrecy, and identity protection.